What do 你 think can make NALU（纳兹与露西） fully reach it's potential like who 或者 how will make them confess to each other?

Suggestions (you don'y have to choose from here, let me your ideas.):
1)Lucy confesses first
2)Natsu makes a funny, touching confession
3)two of them alone facing a trial
4)Lucy almost dies for some 随意 situation
*note: ALMOST
5)Natsu needs to save Lucy from her depression and finds out she has always thought of him as the 射线, 雷 of hope to her life and get touched and embarrassed
6)make them play Romeo and Juliet
And i'm out of suggestion.:(
Now your turn.:)